Pith Number

pith:DUYPDUQE

pith:2018:DUYPDUQE5FEXYCJ3HSHLGJRZEO

not attested not anchored not stored refs pending

Kummer rigidity for K3 surface automorphisms via Ricci-flat metrics

Simion Filip, Valentino Tosatti

arxiv:1808.08673 v3 · 2018-08-27 · math.DS · math.CV · math.DG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DUYPDUQE5FEXYCJ3HSHLGJRZEO}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T03:29:27.019375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d30f1d204e9497c093b3c8eb3263923be3f3802f9c4a65907362efaad48515d

Aliases

arxiv: 1808.08673 · arxiv_version: 1808.08673v3 · doi: 10.48550/arxiv.1808.08673 · pith_short_12: DUYPDUQE5FEX · pith_short_16: DUYPDUQE5FEXYCJ3 · pith_short_8: DUYPDUQE

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/DUYPDUQE5FEXYCJ3HSHLGJRZEO \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1d30f1d204e9497c093b3c8eb3263923be3f3802f9c4a65907362efaad48515d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "995c6b795131b1f70977b8d33bd93af7a91bca1a6d58d11b6a7faba87fe7a016",
    "cross_cats_sorted": [
      "math.CV",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-08-27T03:02:59Z",
    "title_canon_sha256": "d079f29a52ffce182f098d222572bd6eaacf9617e1bd30f87812a83a6ababb7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.08673",
    "kind": "arxiv",
    "version": 3
  }
}